Compact 7 L stainless refrigerated circulator with low-profile design, ±0.04 °C stability from −20 °C to 170 °C, swivel 3.75″ touch‑pad LCD, dual‑speed pump, RS‑232 connectivity—ideal for chilled sample preparation in limited bench space.
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The PolyScience SD7LR‑20‑A11B delivers laboratory-grade refrigeration and heating in a compact 7 L low-profile unit. Covering a broad −20 °C to 170 °C range with reliable ±0.04 °C stability, it’s ideal for tight bench areas or glove box setups.
Equipped with a 3.75″ swivel touch-pad LCD, two-speed pressure pump, and RS‑232 interface, it provides flexible control for external circulation. Safety is ensured with certified over‑temperature and low‑liquid protections. A corrosion-resistant stainless-steel reservoir with insulated cover and rear drain streamline maintenance. It’s the go-to circulator for QA, viscosity testing, thermal analysis, and chilled sample prep where space is at a premium.
Key Features
Specifications Table
| Feature | Specification |
|---|---|
| Capacity | 7 L (1.85 gal) stainless steel |
| Temperature Range | −20 °C to 170 °C |
| Stability | ±0.04 °C |
| Controller | 3.75″ swivel touch-pad LCD |
| Pump Flow/Pressure | Up to 11 L/min @ 3.5 psi |
| Heater / Cooler Power | 1100 W heater; 200 W cooling (at +20 °C) |
| Cooling System | R‑134a refrigeration |
| Connectivity | RS‑232 |
| Display Resolution | 0.1 °C |
| Drain Valve | Rear-mounted |
| Safety | Low-liquid & over-temp protection |
| Dimensions (D×W×H) | 58.9 × 41.1 × 41.1 cm (23.2″ × 16.2″ × 16.2″) |
| Weight | ~41 kg (90 lb) |
